Portable illuminated sign



FIG. 1 is a perspective view of a portable illuminated sign showing my new embodiment, with a broken line showing for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear-end view thereof; and,

FIG. 4 is a right side elevational view thereof, the left side elevational view being a mirror image of the right side elevational view. 

The ornamental design for a portable illuminated sign, as shown and described. 